On Oct 31, 11:40 pm, "William Stein" <[EMAIL PROTECTED]> wrote:
> numpy arrays are multidimensional, etc., and are much more sophisticated > than Sage matrices. All Sage does is 2-dimensional nxm matrices, and > isn't really designed for sophisticated reshaping, especially in the > multidimensional case (where Sage doesn't do anything). Are you working > with multidimensional arrays? I was planning to, but right now what I needed was a way of modifying/ replacing individual columns, rows and other submatrices, applying a 2x2 matrix to a pair of columns or rows, extracting a submatrix defined by lists of row and column indeces and permuting the rows and columns on the basis of a permutation given as a list of indeces. Best, Manny --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~----------~----~----~----~------~----~------~--~---
